California's cap-and-trade market saw its largest carbon sale, $1.02 billion, thanks to millions of motorists now paying about a dime a gallon for the right to emit carbon for the first time since the program began in November 2012.

A proposed development in in the North Loop section of Minneapolis would be the first of its kind. According to the architect behind the design, the "T3" project, as its known, could be a harbinger of buildings to come.

One of the largest ongoing planning efforts in the city of Los Angeles is an update to the Mobility Element of the city's General Plan. A revised version of the draft "Mobility Plan 2035" was released in February.

The design reveal is more than just a showcase for architects Bjarke Ingels and Thomas Heatherwick. The project also raises tough questions about how far suburban cities in the South Bay Area are willing to go to support the current tech boom.